Not sure if the tbr7 uses the same stator as the Hawk (typical 8 coil found in most CG engines) but if it does, then it has around 120W output. If you are measuring amps, then the total output should be around 16V/3.5A at 1500rpm and about 36V/8.5A at 8000.
As for your theory on the Reg/Rec. Yes, the regulator's basic job is to convert unused DC power into heat to prevent overcharging. Some heat is also created in the rectifier when turning the AC input to DC output with the old Thyristor style rectifiers creating more heat than the more efficient MOSFET units of newer bikes.
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